DM74LS47 BCD to 7-Segment Decoder/Driver with Open-Collector Outputs October 1988 Revised March 2000 DM74LS47 BCD to 7-Segment Decoder/Driver with Open-Collector Outputs General Description The DM74LS47 accepts four lines of BCD (8421) input data, generates their complements internally and decodes the data with seven AND/OR gates having open-collector outputs to drive indicator segments directly.
Each segment output is guaranteed to sink 24 mA in the ON (LOW) state and withstand 15V in the OFF (HIGH) state with a maximum leakage current of 250 µA.
Auxiliary inputs provided blanking, lamp test and cascadable zero-suppression functions.
Features s Open-collector outputs s Drive indicator se...

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